{
  "abstract": "We introduce a novel approach to particle detection in which a superconducting qubit itself serves as the scattering target and a resolved transition between circuit eigenstates constitutes the observable final state. The scattering amplitude factorizes into the incident-particle current and a finite-momentum electromagnetic transition response of the qubit. This momentum dependence is essential in that the energy transfer is fixed by the microwave-scale level spacing, whereas a nonrelativistic incident particle can transfer a spatial momentum parametrically larger than that energy and thereby resolve the device geometry. For charge-dominated processes, we recast the response as an induced-offset-charge kernel obtained from an auxiliary electrostatic weighting potential, providing a practical route from circuit geometry to a differential scattering cross section. We illustrate the framework with an Xmon-style transmon and photon-mediated scattering of dark matter. The exceptionally small qubit transition threshold opens sensitivity to an eV-to-keV mass regime that is largely unexplored by existing direct-detection experiments.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2611.05469",
  "author_total": 3,
  "authors": [
    {
      "name": "Doojin Kim"
    },
    {
      "name": "Kyoungchul Kong"
    },
    {
      "name": "Myeonghun Park"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/c7dmvtm08am20.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2611.05469",
  "fulltext_url": null,
  "id": "c7dmvtm08am20",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2611.05469",
  "language": null,
  "licence": "CC0-1.0",
  "licence_label": "CC0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/publicdomain/zero/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "hep-ph"
    ],
    [
      "arxiv",
      "quant-ph"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2611.05469",
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-03",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/c7dmvtm08am20.ris",
  "sources": [
    {
      "first_seen": "2026-11-05T15:20:56Z",
      "native_id": "2611.05469",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2611.05469"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-ph",
      "subfield": "high-energy"
    },
    {
      "field": "physics",
      "origin": "arxiv:quant-ph",
      "subfield": "quantum"
    }
  ],
  "title": "Superconducting Qubits as Quantum Targets for Direct Particle Scattering",
  "title_text": "Superconducting Qubits as Quantum Targets for Direct Particle Scattering",
  "type": "preprint",
  "updated_at": "2026-11-09T00:20:18Z",
  "url": "https://research.draconitic.com/paper/c7dmvtm08am20",
  "venue": "arXiv",
  "versions": []
}